class FlickrAuthentication

# File lib/flickr_authentication.rb, line 10
def initialize(options = {})
  @key           = options[:key]
  @shared_secret = options[:shared_secret]
  @auth_file     = options[:auth_file]
end

# File lib/flickr_authentication.rb, line 16
def authenticate
  FlickRaw.api_key        = key
  FlickRaw.shared_secret  = shared_secret

  if File.exists?(auth_file)
    puts "authenticating with #{auth_file}"
    data = YAML.load_file(auth_file)

    flickr.access_token   = data['access_token']
    flickr.access_secret  = data['access_secret']

    begin
      flickr.test.login
    rescue Exception => e
      puts "There are bad credentials in #{@auth_file}. Delete it and try again."
    end

  else
    token    = flickr.get_request_token
    auth_url = flickr.get_authorize_url(token['oauth_token'], :perms => 'write')

    puts " "
    puts "opening your browser..."
    sleep 1
    puts "Come back and press enter the given number when you are finished"
    sleep 2
    Launchy.open(auth_url)

    verify = gets.strip

    begin
      flickr.get_access_token(token['oauth_token'], token['oauth_token_secret'], verify)
      login = flickr.test.login
      puts "You are now authenticated as #{login.username} with token #{flickr.access_token} and secret #{flickr.access_secret}"
      # Write the YML File
      data = {}
      data["access_token"]  = flickr.access_token
      data["access_secret"] = flickr.access_secret
      File.open(auth_file, "w"){|f| YAML.dump(data, f) }
    rescue FlickRaw::FailedResponse => e
      puts "Authentication failed : #{e.msg}"
    end
  end

  flickr #return the flickr object

end